AirHint found the following cheapest return flights from New York (LGA) to Keflavik (KEF) in May 2026 (see full year).

Return flights

09 May - 17 May	Delta
11 May - 17 May	Delta
16 May - 23 May	KLM
17 May - 24 May	Air France
30 May - 06 Jun	Air France
10 May - 20 May	British Airways
08 May - 15 May	Air Canada
04 May - 11 May	Air Canada
03 May - 10 May	British Airways
19 May - 28 May	Spirit Airlines
07 May - 10 May	British Airways

Also check the deals for one-way flights from New York to Keflavik in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from New York to Keflavik in May from 365€

Return flights